<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      #asdf {
        font-size: 0.32rem;
        color: rgb(255, 255, 255);
        background-color: rgba(0, 0, 0, 0.6);
        padding: 10px 15px;
        margin: 0 0 0 -60px;
        border-radius: 4px;
        position: fixed;
        top: 50%;
        left: 50%;
        width: 130px;
        text-align: center;
      }
    </style>
  </head>
  <body>
    <div id="asdf"></div>
  </body>
</html>
